OMEN ALPHA
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OMEN Computers - - -
https://github.com/osmibity
- - - Page: 5
THE BOARD
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Jumpers and pin headers
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JP1: Serial port. Pins are GND, TxD, RxD from left to right, RxD is next to the
JP1 label
JP2, JP3, JP4: Parallel ports. See below. The square marks the pin 1.
JP5: EEPROM write enable. Short pins 1-2 to disable writing, or short pins 2-3
to enable writings. Pin 1 is on the left, pin 3 is next to the JP5 label
JP7: RST7.5 enabler. Close to disable interrupts, open to leave it on the
application bus. Connect the 10k resistor to make it “open
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collector signal”.
JP8: Serial signals SID and SOD